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3 types of muscles
Skeletal/striped or voluntary muscle
The heart.
Smooth or involuntary muscles
Small intestine.
Cardiac muscle
Biceps and triceps…read more

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MUSCLE MAIN ACTION(S)
Deltoid Raises your arm sideways at the shoulder
Biceps Bends your arm at the elbow
Abdominals Pull in your abdomen. Flex your trunk so you can bend
forward
Quadriceps Straighten your leg at the knee and keep it straight when
you stand
Pectorals Raises your arm at the shoulder. Draws it across your chest
Latissimus dorsi Pulls your arm down at the shoulder. Draws it behind your
back
Trapezius Holds and rotates your shoulders. Moves your head back and
sideways
Triceps Straightens your arm at the elbow
Gluteals Pull your leg back at the hip. Raise it sideways at the hip.
Gluteus maximus is the biggest
Hamstrings Bend your leg at the knee
gastrocnemius Straightens the ankle joint so you can stand on tiptoes…read more

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CARDIAC MUSCLE
Cardiac is a special type of involuntary
Muscle.
It is ONLY found in the heart.
It contracts regularly, continuously
and without tiring.
It works automatically but is
under constant nervous and
chemical control.…read more

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HOW DO OUR MUSCLES WORK?
There are 3 main types of muscular contraction:
· Isotonic and concentric
· Isotonic and eccentric
· Isometric…read more

Slide 6

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MUSCLE FIBRE TYPES
We have two different types of fibres in skeletal
muscle:
· SLOW-TWITCH
· FAST-TWITCH…read more

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